/*
 * (C) Copyright 2006-2010 Nuxeo SAS (http://nuxeo.com/) and contributors.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the GNU Lesser General Public License
 * (LGPL) version 2.1 which accompanies this distribution, and is available at
 * http://www.gnu.org/licenses/lgpl.html
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * Contributors:
 *     bstefanescu
 */
package org.nuxeo.gwt.habyt.templates.client;

import java.util.HashMap;
import java.util.Map;

import com.google.gwt.core.client.GWT;
import com.google.gwt.dom.client.Element;
import com.google.gwt.user.client.ui.Widget;

/**
 * The implementation of this class is generated by deffered binding - the
 * generate class name will be _WidgetRegistryImpl
 * 
 * @author <a href="mailto:bs@nuxeo.com">Bogdan Stefanescu</a>
 * 
 */
public abstract class WidgetRegistry {

    private static WidgetRegistry instance;

    public static WidgetRegistry get() {
        if (instance == null) {
            instance = GWT.create(WidgetRegistry.class);
        }
        return instance;
    }

    protected Map<String, WidgetFactory> registry = new HashMap<String, WidgetFactory>();

    public void addFactory(WidgetFactory factory) {
        registry.put(factory.getId(), factory);
    }

    public WidgetFactory getFactory(String id) {
        return registry.get(id);
    }

    public Widget getWidget(String id, Element element) {
        WidgetFactory factory = getFactory(id);
        return factory != null ? factory.getWidget(element) : null;
    }
}
